Sock



FIG. 1 is a right side elevational view of a sock showing our new designin its contracted condition;

FIG. 2 is a right side elevational view thereof, illustrated in itsextended condition;

FIG. 3 is a front elevational view thereof, illustrated in itscontracted condition; and

FIG. 4 is a front elevational view thereof, illustrated in its extendedcondition.

The ornamental design for a sock, as shown and described. 